JPS6024430Y2 - Continuous spray manual sprayer - Google Patents

Description

[Detailed explanation of the idea] This proposal relates to a continuous spray type manual sprayer.

Manual sprayers that spray by moving a piston up and down within a cylinder are widely known, but they usually spray when the piston is lowered, and do not spray when the piston is raised because liquid is sucked into the cylinder.

The present invention has a simple structure and is provided so as to spray continuously when the piston moves up and down, and will be explained below with reference to the drawings.

A container body 1 has an inward flange 2 attached to its upper end, and a cap 5 having a spray window 3 and an operation window 4 is fitted onto the upper end.

An outward flange 6 attached to the upper end is placed on the upper surface of the inward flange, and a cylinder 7 is vertically disposed within the container body.

The cylinder has a suction check valve 8 on its lower inner surface, and a flexible liquid suction pipe 9 is provided vertically from the lower end.

An upward stepped portion 10 is formed at the mouth portion of the large inner diameter portion 11.
It is desirable to form the

It is preferable to hang a negative pressure prevention pipe 6a vertically from the flange 6, and the pipe hole 6b is opened to the upper surface of the flange, the lower end is closed, and the pipe is opened to the lower side, so that the interior of the container is The short elastic tube 6C may be fitted into the lower part of the tube including the opening so that outside air can be sucked in when the pressure is reduced to negative.

The piston portion 13 of the spray member 12 is inserted into the cylinder.

The piston part is fitted into the lower part of the outflow pipe 14 so as to be able to move up and down within a certain range, and the upper part of the outflow pipe is bent sideways and a spray head 16 having a nozzle hole 15 is fitted at the tip thereof. be.

When the piston is inserted, the cylinder mouth is watertightly closed by the backing member 17 so that the outflow pipe can move up and down.

The backing member may be formed into a ring shape, and the outflow pipe may be inserted into the through hole 18 of the backing member, and the peripheral edge portion 19 thereof may be fitted into the upward step portion 10.

20 is an O-ring fitted into the inner surface of the through hole.

The lower part of the outflow pipe has an inflow hole 21 that communicates between the cylinder chamber 22a below the piston and the inside of the outflow pipe hole 14a, and an inlet/outlet hole 23 that communicates the cylinder chamber 22a above the piston part with the inside of the outflow pipe hole. A three-way valve 24 is formed.

Various types of three-way valve structures are conceivable, but in the illustrated example, the lower end of the outflow pipe is closed, the outward flange 25 is protruded, and the engaging element 26 is inserted upwardly from the outer surface of the outflow pipe at an appropriate interval. The piston portion 13 is configured to protrude outward and to be slidable to a portion between the outward flange 25 and the engager.
It is fitted.

Further, an inflow hole 21 is formed in the lower wall portion between them so that it can be opened when the piston is closed when it is lowered and raised, and the engaging element is formed into a tubular shape, and the tube hole is used as an inlet/outlet hole 23.

This point will be discussed further later.

It is preferable to form a discharge valve 27 in the spray head 16 .

In the illustrated example, the inner diameter of the distal end of the outflow tube is a large inner diameter section 28, and the spray head 16 having the nozzle hole 15 is fitted onto the outer surface of the distal end with the valve body member 29 mounted therein.

The valve body member has a rod portion with an elastically deformable ring-shaped portion 30 in the middle, and plate portions 31 and 32 are attached to both ends of the rod portion, and an insertion rod portion 33 is protruded from the center of the tip surface of one of the plate portions. and an outwardly facing stepped portion 28 formed to allow the insertion rod portion 33 to be inserted into the outflow pipe hole and to form the large inner diameter portion 28.
Press the plate part on the side having the insertion rod part to the discharge valve 27.
Then, the other plate portion 32 may be brought into pressure contact with the inner surface of the top wall of the spray head.

A piston groove 34 communicating with the nozzle hole 15 is formed on the inner surface of the top wall or on the surface of the plate portion that comes into pressure contact with the top wall.

An engaging member 35 is projected from the outer surface of the upper part of the outflow pipe, and the outflow pipe portion is inserted between the retainer and the backing member 17, and a compression coil spring 36 is provided to bias it upward.

In the above configuration, when the spray member 12 is pushed down from the state shown in FIG. descend.

At this time, since the suction valve 8 is in a closed state, the liquid in the cylinder chamber below the piston passes through the inflow hole 21 and enters the outflow pipe 14.
A part of the liquid enters the cylinder chamber 22b above the piston part through the inlet/outlet hole 23 and is sprayed by opening the discharge valve 27.

When the outflow pipe falls to the lower limit, the discharge valve closes and spraying is stopped, and by releasing the push-down, the spray member is raised by the push-up of the coil spring 36.

The piston part engages with the outward flange 25 and rises together, and at this time closes the inflow hole 21, so the pressure in the cylinder chamber 22a below the piston becomes negative, and the suction check valve 8 opens to drain the liquid inside the container. Inhale.

Moreover, since the cylinder chamber above the piston part is narrowed, the liquid in the chamber passes through the inlet/outlet hole 23 and the outlet pipe hole 41a and is sprayed, and in this way, the spray member sprays both when moving up and down. .

The present invention has the above-mentioned structure, in which a three-way valve is formed at the lower end of the outflow pipe inserted into the cylinder, and the cylinder mouth is sealed with a backing member, so that when the spraying member is pressed down, the liquid in the cylinder chamber below the piston flows into the outflow pipe on one side. The liquid is sprayed through the hole and the nozzle hole and flows into the cylinder chamber above the other piston, and when the piston rises, the liquid inside the cylinder above the piston is sprayed, making it convenient to be able to spray continuously. Regardless of the spraying, the operation is as simple as pressing down the spraying member as in the past, so it is not troublesome, and the structure is relatively simple, so it can be manufactured at low cost.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view of the present sprayer with the spray member in the raised state, and FIG. 2 is a cross-sectional view of the sprayer with the spray member in the depressed state. 1...Container body, 7...Cylinder, 12
... Spraying member, 13 ... Piston part, 1
4...Outflow pipe, 24...Three-way valve, 17
...Backing member.

Claims (1)

[Scope of utility model registration request] A cylinder 7 is vertically installed into the container body by appropriate means, and has a liquid suction means with a check valve 8 hanging from the lower part, and the lower part of the outflow pipe 14 whose lower end face is closed is movable up and down into the cylinder. In addition to being urged upward and inserted, a piston part 1 is provided at the bottom of the outflow pipe so as to be able to move up and down within a certain range.
3 is fitted into the spray member 1, and a spray head with a nozzle hole is attached to the tip of the outflow pipe projecting upward from the cylinder.
2, the cylinder opening is watertightly closed by a packing member 17 so that the outflow pipe can move up and down, and the piston part is closed against the lower part of the outflow pipe by a low-friction pile against the cylinder when the spraying member is pressed down. An inflow hole 21 which is designed to rise and descend when the spraying member rises, and which is closed only when the piston part is at the lower limit with respect to the lower part of the outflow pipe; and an inlet/outlet hole located above the upper limit position of the piston part. A continuous spray type manual sprayer, characterized in that 23 is bored at the bottom of the outflow pipe.